SIU SOM Logo. Microtome for cutting ultrathin tissue sections. Panulirus interruptus , the California spiny lobster. Stomatogastric ganglion. Synaptic contacts within a small region of nervous tissue. Shape of one nerve cell (in lobster stomatogastric ganglion).
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the California spiny lobster
(in lobster stomatogastric ganglion)
the cardia in the fly digestive tract
in cross section of fly nerve cord
Tabanidae, TabanuscalensLinnaeusSyrphidae, HelophilusfasciatusWalker
Fly species differ in their distributions of nerve-fiber diameter.
Bombyliidae, Sparnopoliussp.Bombyliidae, Poecilanthraxsp.
One point which has greatly troubled me; . . . what the devil determines each particular variation? What makes a tuft of feathers come on a cocks head, or moss on a moss rose?
Letter to T.H. Huxley 1859